Changelog for summoner-1.3.0

Changelog

summoner uses PVP Versioning. The changelog is available on GitHub.

#285: Implement summon script command.
#151, #295: Add support for GHC-8.6. Make GHC-8.6.4 default.
#269: Important: Introduce ghc-options configuration parameter. Deprecate warnings field in TOML file.

Migration guide: Please, rename warnings field if you use one, it will be removed in the very next release. Use ghc-options instead.
#303: Add option noUpload to TOML config file.
Important: Summoner doesn't add old GHC versions into Travis matrix for Stack anymore. See this Stack issue for reasoning: https://github.com/commercialhaskell/stack/issues/4488
#280: Support build with cabal-install on the AppVeyor CI.
#272: Simplify Travis config for Cabal.
#275: Simplify Travis settings/installation process for Stack.
#261: Guess author login, name and email from .gitconfig.
#268: Simplify process of adding custom prelude in the interactive mode.
#282: Allow users to extend the .gitignore file.
#286, #288, #304: Bump up to tomland-1.0.0, relude-0.5.0, shellmet-0.0.1.
Drop support for GHC-8.6.3 on CI. Support GHC-8.6.4 on CI.

Make cabal-version: 2.0 default in generated projects.
#11: Support offline mode.
#199: Add None license with no LICENSE file generation. Add licenses short descriptions text during the interactive mode. Patch summon show license command to show short description about each license.
#197 Build with stack lts-12.20, and support GHC 8.4.4 in project generation. Make GHC-8.4.4 the default one for generated project.
#37: Add HLint check on Travis CI in generatd projects.
#142: Add version bounds to base in the generated .cabal file.
#239: Make categories not mandatory.
Use defaultDescription for project description if not specified.
#185: Add golden tests.
#184 Add --no-upload option.
#169: Make AppVeyor use the 64bits version of stack and build for 64 bits.
#154: Add Link constructor to Source data type.
#178: Remove unnecessary new lines and trailing spaces in most places.
#168: Upgrade stack intall-cabal option's version to 2.2.0.1 in the generated Travis file.
#195: Update prompt questions for CLI.
Add more documentation to the functions.
#155: Bump up to tomland-0.5.0.
#202: Bump up to relude-0.4.0.
Remove tasty dependencies from tests.
Drop support for GHC-8.6.1 on CI. Support GHC-8.6.2 on CI.
Drop support for GHC-8.4.3 on CI. Build with GHC-8.4.4 on CI.
Use defaultDescription for project description if not specified.

#128: Important: Replace summon with summon new command. To create a project now the following command should be used:
```
summon new my-project
```
#82: Add stackage badges.
#109: Fix travis cache directories.
#117: Step into created project properly
#110: Print executing command.
#91: Add warning fields for ghc.
#90: Add TOML test.
#120: Bump up dependencies.
#58: Make Licence type safer.
#124: Print directories bold.
#130: Show git revision version under --version command.
#63: Add show ghc, show license and show license <LICENSE_NAME> commands.
#122: Remove github link from CHANGELOG when github is not chosen.
#35: Add config option to add .stylish-haskell.yaml to your project (via URL or file path).
Bump up tomland version to 0.4.0.
#138: Remove traces of GitHub from .cabal file when GitHub integration is disabled.
#31: Add config option to add CONTRIBUTING.md to your project (via URL or file path).
#27: Remove b script.

#100: Bump up to ghc-8.4.3. Add support for Ghc843 in code and make it default.
Make CI badges in README be shown depending on the chosen options.
#99: UseTravis-specific env variable TRAVIS_BUILD_DIR in created travis file.
#97: Add cabal to created travis file.
#96: Add option to choose cabal, stack or both.

Important: Rename hs-init to summoner. Transform the script into the package.
#54: Rename on and off commands to with and without.
#48:
- Add ability to write configurations file. Remove Targets data type. Use Config instead for default, file and CLI configurations.
#60: Use custom prelude universum.
#39: Add option to use custom prelude in CLI and in .toml configuration.
#38: Add option to add default extensions to .toml config.
#62: Make some parts of output not only colorful, but also bold. This makes output prettier.
#67: Add Aswer data type to handle yes-no CLI questions.
#61: Add CLI --version option.
#73: Make custom prelude be table in toml.
#74: Print hierarchy tree for the created project.